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Finding the Fourth Proportional to 330,807.22, 496,240.43 and 128,398.58

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Solution

The fourth proportional to 330,807.22, 496,240.43 and 128,398.58 is: 192,609.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,807.22 : 496,240.43 = 128,398.58 : x
  2. Step 2: Convert to fraction form
    330,807.22/496,240.43 = 128,398.58/x
  3. Step 3: Cross multiply
    330,807.22x = 496,240.43 × 128,398.58
  4. Step 4: Simplify right side
    330,807.22x = 63,716,567,791.19
  5. Step 5: Solve for x
    x = 63,716,567,791.19/330,807.22
  6. Step 6: Final answer
    x = 192,609.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.